Kimi K1.5 Base on IFEval: score, rank and what it means
Kimi K1.5 Base scores 86.0 on IFEval, placing it #157 of 600 models in the index. The benchmark average is 78.6 and the leader is Claude Opus 4.5 Pro at 96.1.
Score distribution
The chart shows the top 10 models on IFEval, with Kimi K1.5 Base highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | Claude Opus 4.5 Pro | Anthropic | 200000 | $20.98 | 89.1 |
| 2 | Claude Opus 4.5 Reasoning | Anthropic | 2000000 | $20.91 | 88.2 |
| 3 | GPT-5.2 Pro | OpenAI | 2000000 | $21.32 | 89.6 |
| 4 | GPT-5.2 Max | OpenAI | 1000000 | $21.39 | 89.2 |
| 5 | GPT-5.2 Reasoning | OpenAI | 1000000 | $20.98 | 87.5 |
| 6 | GPT-5.1 Pro | OpenAI | 200000 | $19.77 | 87.8 |
| 7 | Gemini 3 Pro Max | Google DeepMind | 2000000 | $20.57 | 87.9 |
| 8 | GPT-5.1 Reasoning | OpenAI | 400000 | $20.27 | 88.3 |
| 9 | Claude Opus 4.5 Max | Anthropic | 1000000 | $20.90 | 87.8 |
| 10 | o4 Reasoning | OpenAI | 1000000 | $19.69 | 87.5 |
What this score means
On IFEval, Kimi K1.5 Base sits at #157 of 600. The leader, Claude Opus 4.5 Pro, scores 96.1, so the gap to the top is 10.1 points. The median model in this index scores 81.2, which puts Kimi K1.5 Base above the midpoint.
Moonshot AI models average 80.8 on this benchmark. Kimi K1.5 Base is 5.2 points above that provider line, so it is a stronger result than the average Moonshot AI model.
Among multimodal models, the average is 85.2. Kimi K1.5 Base is 0.8 points above that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 86.0 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.
Price context
At $4.34 per million input tokens, Kimi K1.5 Base is above the median input price of $4.00 across the 600 models scored on IFEval. The models immediately around it in the ranking are shown below so you can compare score and price together.
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| MiniMax-M2 | MiniMax | 200000 | $5.19 | 80.6 |
| Claude Haiku 4.5 Vision | Anthropic | 128000 | $13.01 | 79.2 |
| ERNIE 4.0 Pro | Baidu | 200000 | $12.58 | 77.5 |
| ERNIE 4.5 Pro | Baidu | 1000000 | $13.89 | 80.5 |
| Kimi K1.5 Base | Moonshot AI | 65536 | $4.34 | 77.4 |
| Llama 3.1 Turbo Instruct | Together AI | 32768 | $4.21 | 76.7 |
| Reka Core Pro | Reka AI | 65536 | $13.44 | 79.9 |
Other benchmarks for Kimi K1.5 Base
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 78.2 | 237 | 61th | |
| GPQA Diamond | 74.3 | 160 | 73th | |
| SWE-bench Verified | 67.3 | 162 | 73th | |
| HumanEval | 82.2 | 181 | 70th | |
| MATH-500 | 79.9 | 211 | 65th | |
| AIME 2025 | 72.9 | 204 | 66th | |
| LiveCodeBench | 67.0 | 250 | 58th | |
| TruthfulQA | 81.2 | 149 | 75th | |
| HellaSwag | 85.8 | 223 | 63th | |
| MMMU | 76.3 | 133 | 78th | |
| Arena Elo | 1397.5 | 216 | 64th |
FAQ
What score does Kimi K1.5 Base get on IFEval?
Kimi K1.5 Base scores 86.0 on IFEval in this index. The benchmark average is 78.6 and the top score is 96.1.
How does Kimi K1.5 Base rank on IFEval?
It ranks #157 of 600 models, in the 74th percentile. The leader is Claude Opus 4.5 Pro at 96.1.
Is Kimi K1.5 Base good at IFEval?
Yes, relative to the index: it is above the median and inside the top half of scores. The result should be read alongside its price and context window.
How is the IFEval score calculated?
IFEval is a instruction following benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.
What does Kimi K1.5 Base cost?
Kimi K1.5 Base costs $4.34 per million input tokens and $15.70 per million output tokens.